This clip shows how a vacuum flask prevents heat loss. Detail of the design of the flask to prevent conduction, convection, radiation and evaporation is given. This includes the vacuum ...

The answer to all our collective, rapidly cooling hot drink woes? A vacuum-insulated flask. Think of a vacuum flask as a cup ...

This is the product's overall performance score, based on key tests conducted by our industry experts in the CHOICE labs.

Flask bottles are multipurpose containers made to keep drinks at a consistent temperature for long periods. Usually ...